<?php
namespace yifang\db;

class Db_raw extends Raw
{
    /**
     * 创建一个查询表达式
     */
    public function __construct($value = "", array $bind = [])
    {
        parent::__construct($value,$bind);
    }

    /**
     * 设置内容
     */
    public function setContent($content){
        $this->value=$content;
    }
}